So my new build has a HD4200 IGP in it with 128mb dedicated memory. I was going to hold off on a video card for a bit but am now unsure. I have limited funds left for this so I have to make a choice. I play games like WoW and other MMOs. I can either buy a 4670 or another 2GB of RAM to make 4 total. My system already has 2GB installed.....I dont know what to do